- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄4224 > XCV405E-6FG676C (Xilinx Inc)IC FPGA 1.8V C-TEMP 676-FBGA PDF資料下載
參數(shù)資料
| 型號(hào)： | XCV405E-6FG676C |
| 廠(chǎng)商： | Xilinx Inc |
| 文件頁(yè)數(shù)： | 39/118頁(yè) |
| 文件大小： | 0K |
| 描述： | IC FPGA 1.8V C-TEMP 676-FBGA |
| 產(chǎn)品變化通告： | FPGA Family Discontinuation 18/Apr/2011 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | Virtex®-E EM |
| LAB/CLB數(shù)： | 2400 |
| 邏輯元件/單元數(shù)： | 10800 |
| RAM 位總計(jì)： | 573440 |
| 輸入/輸出數(shù)： | 404 |
| 門(mén)數(shù)： | 129600 |
| 電源電壓： | 1.71 V ~ 1.89 V |
| 安裝類(lèi)型： | 表面貼裝 |
| 工作溫度： | 0°C ~ 85°C |
| 封裝/外殼： | 676-BGA |
| 供應(yīng)商設(shè)備封裝： | 676-FBGA（27x27） |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)當(dāng)前第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)
Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays
DS025-2 (v3.0) March 21, 2014
Module 2 of 4
23
R
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
Design Factors
Use the following design considerations to avoid pitfalls and
improve success designing with Xilinx devices.
Input Clock
The output clock signal of a DLL, essentially a delayed ver-
sion of the input clock signal, reflects any instability on the
input clock in the output waveform. For this reason the qual-
ity of the DLL input clock relates directly to the quality of the
output clock waveforms generated by the DLL. The DLL
input clock requirements are specified in the data sheet.
In most systems a crystal oscillator generates the system
clock. The DLL can be used with any commercially available
quartz crystal oscillator. For example, most crystal oscilla-
tors produce an output waveform with a frequency tolerance
of 100 PPM, meaning 0.01 percent change in the clock
period. The DLL operates reliably on an input waveform with
a frequency drift of up to 1 ns — orders of magnitude in
excess of that needed to support any crystal oscillator in the
industry. However, the cycle-to-cycle jitter must be kept to
less than 300 ps in the low frequencies and 150 ps for the
high frequencies.
Input Clock Changes
Changing the period of the input clock beyond the maximum
drift amount requires a manual reset of the CLKDLL. Failure
to reset the DLL produces an unreliable lock signal and out-
put clock.
It is possible to stop the input clock with little impact to the
DLL. Stopping the clock should be limited to less than
100
μs to keep device cooling to a minimum. The clock
should be stopped during a Low phase, and when restored
the full High period should be seen. During this time
LOCKED stays High and remains High when the clock is
restored.
When the clock is stopped, one to four more clocks are still
observed as the delay line is flushed. When the clock is
restarted, the output clocks are not observed for one to four
clocks as the delay line is filled. The most common case is
two or three clocks.
In a similar manner, a phase shift of the input clock is also
possible. The phase shift propagates one to four clocks to
the output after the original shift, with no disruption to the
CLKDLL control.
Output Clocks
As mentioned earlier in the DLL pin descriptions, some
restrictions apply regarding the connectivity of the output
pins. The DLL clock outputs can drive an OBUF, a global
clock buffer BUFG, or they can route directly to destination
clock pins. The only BUFGs that the DLL clock outputs can
drive are the two on the same edge of the device (top or bot-
tom). In addition, the CLK2X output of the secondary DLL
can connect directly to the CLKIN of the primary DLL in the
same quadrant.
Do not use the DLL output clock signals until after activation
of the LOCKED signal. Prior to the activation of the
LOCKED signal, the DLL output clocks are not valid and
can exhibit glitches, spikes, or other spurious movement.
Useful Application Examples
The Virtex-E DLL can be used in a variety of creative and
useful applications. The following examples show some of
the more common applications. The Verilog and VHDL
example files are available at:
Standard Usage
The circuit shown in Figure 27 resembles the BUFGDLL
macro implemented to provide access to the RST and
LOCKED pins of the CLKDLL.
Board Level De-Skew of Multiple Non-Virtex-E
Devices
The circuit shown in Figure 28 can be used to de-skew a
system clock between a Virtex-E chip and other non-Vir-
tex-E chips on the same board. This application is com-
monly used when the Virtex-E device is used in conjunction
with other standard products such as SRAM or DRAM
devices. While designing the board level route, ensure that
the return net delay to the source equals the delay to the
other chips involved.
Figure 26: Virtex Series DLLs
x132_14_100799
B
R
A
M
DLL-3P
DLL-1P
DLL-3S
DLL-1S
DLL-2S
DLL-0S
DLL-2P
DLL-0P
Bottom Right
Half Edge
B
R
A
M
B
R
A
M
B
R
A
M
Figure 27: Standard DLL Implementation
CLK0
CLK90
CLK180
CLK270
CLK2X
CLKDV
LOCKED
CLKIN
CLKFB
RST
ds022_028_121099
CLKDLL
BUFG
IBUFG
IBUF
OBUF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XC6VCX130T-1FFG484C | IC FPGA VIRTEX 6 128K 484FFGBGA |
| AT24C02C-SSHM-T | IC EEPROM 2KBIT 1MHZ 8SOIC |
| BQ4014MB-120 | IC NVSRAM 2MBIT 120NS 32DIP |
| XC6VLX75T-1FFG784C | IC FPGA VIRTEX 6 74K 784FFGBGA |
| XC4VLX40-11FFG1148C | IC FPGA VIRTEX-4 LX 40K 1148FBGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XCV405E-6FG676I | 功能描述:IC FPGA 1.8V 676-BGA RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - FPGA（現(xiàn)場(chǎng)可編程門(mén)陣列） 系列:Virtex®-E EM 產(chǎn)品變化通告:Step Intro and Pkg Change 11/March/2008 標(biāo)準(zhǔn)包裝:1 系列:Virtex®-5 SXT LAB/CLB數(shù):4080 邏輯元件/單元數(shù):52224 RAM 位總計(jì):4866048 輸入/輸出數(shù):480 門(mén)數(shù):- 電源電壓:0.95 V ~ 1.05 V 安裝類(lèi)型:表面貼裝 工作溫度:-40°C ~ 100°C 封裝/外殼:1136-BBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:1136-FCBGA 配用:568-5088-ND - BOARD DEMO DAC1408D750122-1796-ND - EVALUATION PLATFORM VIRTEX-5 |
| XCV405E-6FG900C | 制造商:XILINX 制造商全稱(chēng):XILINX 功能描述:Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays |
| XCV405E-6FG900I | 制造商:XILINX 制造商全稱(chēng):XILINX 功能描述:Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays |
| XCV405E-7BG404C | 制造商:XILINX 制造商全稱(chēng):XILINX 功能描述:Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays |
| XCV405E-7BG404I | 制造商:XILINX 制造商全稱(chēng):XILINX 功能描述:Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。